Kristallnacht, literally, "Night of Crystal," is often referred to as the "Night of Broken Glass." The name refers to the wave of violent anti-Jewish pogroms which took place on November 9 and 10, 1938, throughout Germany, annexed Austria, and in areas of the Sudetenland in Czechoslovakia recently occupied by German troops.

Instigated primarily by Nazi Party officials and members of the SA (Sturmabteilungen: literally Assault Detachments, but commonly known as Storm Troopers) and Hitler Youth, Kristallnacht owes its name to the shards of shattered glass that lined German streets in the wake of the pogrom—broken glass from the windows of synagogues, homes, and Jewish-owned businesses plundered and destroyed during the violence.

In its aftermath, German officials announced that Kristallnacht had erupted as a spontaneous outburst of public sentiment in response to the assassination of Ernst vom Rath, a German embassy official stationed in Paris. Herschel Grynszpan, a 17-year-old Polish Jew, had shot the diplomat on November 7, 1938. A few days earlier, German authorities had expelled thousands of Jews of Polish citizenship living in Germany from the Reich; Grynszpan had received news that his parents, residents in Germany since 1911, were among them.

Initially denied entry into their native Poland, Grynszpan's parents and the other expelled Polish Jews found themselves stranded in a refugee camp near the town of Zbaszyn in the border region between Poland and Germany. Already living illegally in Paris himself, a desperate Grynszpan apparently sought revenge for his family's precarious circumstances by appearing at the German embassy and shooting the diplomatic official assigned to assist him.

Vom Rath died on November 9, 1938, two days after the shooting. The day happened to coincide with the anniversary of the 1923 Beer Hall Putsch, an important date in the National Socialist calendar. The Nazi Party leadership, assembled in Munich for the commemoration, chose to use the occasion as a pretext to launch a night of antisemitic excesses. Propaganda minister Joseph Goebbels, a chief instigator of the pogrom, intimated to the convened Nazi 'Old Guard' that 'World Jewry' had conspired to commit the assassination and announced that, "the Führer has decided that … demonstrations should not be prepared or organized by the Party, but insofar as they erupt spontaneously, they are not to be hampered."

Goebbels' words appear to have been taken as a command for unleashing the pogrom. After his speech, the assembled regional Party leaders issued instructions to their local offices. Violence began to erupt in various parts of the Reich throughout the late evening and early morning hours of November 9–10. At 1:20 a.m. on November 10, Reinhard Heydrich, in his capacity as head of the Security Police (Sicherheitspolizei) sent an urgent telegram to headquarters and stations of the State Police and to SA leaders in their various districts, which contained directives regarding the riots. SA and Hitler Youth units throughout Germany and its annexed territories engaged in the destruction of Jewish-owned homes and businesses; members of many units wore civilian clothes to support the fiction that the disturbances were expressions of 'outraged public reaction.'

Despite the outward appearance of spontaneous violence, and the local cast which the pogrom took on in various regions throughout the Reich, the central orders Heydrich relayed gave specific instructions: the "spontaneous" rioters were to take no measures endangering non-Jewish German life or property; they were not to subject foreigners (even Jewish foreigners) to violence; and they were to remove all synagogue archives prior to vandalizing synagogues and other properties of the Jewish communities, and to transfer that archival material to the Security Service (Sicherheitsdienst, or SD). The orders also indicated that police officials should arrest as many Jews as local jails could hold, preferably young, healthy men.

The rioters destroyed 267 synagogues throughout Germany, Austria, and the Sudetenland. Many synagogues burned throughout the night, in full view of the public and of local firefighters, who had received orders to intervene only to prevent flames from spreading to nearby buildings. SA and Hitler Youth members across the country shattered the shop windows of an estimated 7,500 Jewish-owned commercial establishments, and looted their wares. Jewish cemeteries became a particular object of desecration in many regions.

The pogrom proved especially destructive in Berlin and Vienna, home to the two largest Jewish communities in the German Reich. Mobs of SA men roamed the streets, attacking Jews in their houses and forcing Jews they encountered to perform acts of public humiliation. Although murder did not figure in the central directives, Kristallnacht claimed the lives of at least 91 Jews between 9 and 10 November. Police records of the period document a high number of rapes and of suicides in the aftermath of the violence.

As the pogrom spread, units of the SS and Gestapo (Secret State Police), following Heydrich's instructions, arrested up to 30,000 Jewish males, and transferred most of them from local prisons to Dachau, Buchenwald, Sachsenhausen, and other concentration camps. Significantly, Kristallnacht marks the first instance in which the Nazi regime incarcerated Jews on a massive scale simply on the basis of their ethnicity. Hundreds died in the camps as a result of the brutal treatment they endured; most obtained release over the next three months on the condition that they begin the process of emigration from Germany. Indeed, the effects of Kristallnacht would serve as a spur to the emigration of Jews from Germany in the months to come.

In the immediate aftermath of the pogrom, many German leaders, like Hermann Göring, criticized the extensive material losses produced by the antisemitic riots, pointing out that if nothing were done to intervene, German insurance companies—not Jewish-owned businesses—would have to carry the costs of the damages. Nevertheless, Göring and other top Party leaders decided to use the opportunity to introduce measures to eliminate Jews and perceived Jewish influence from the German economic sphere. The German government made an immediate pronouncement that “the Jews” themselves were to blame for the pogrom and imposed a punitive fine of one billion Reichsmark (some 400 million US dollars at 1938 rates) on the German Jewish community. The Reich government confiscated all insurance payouts to Jews whose businesses and homes were looted or destroyed, leaving the Jewish owners personally responsible for the cost of all repairs.

In the weeks that followed, the German government promulgated dozens of laws and decrees designed to deprive Jews of their property and of their means of livelihood. Many of these laws enforced “Aryanization” policy—the transfer of Jewish-owned enterprises and property to “Aryan” ownership, usually for a fraction of their true value. Ensuing legislation barred Jews, already ineligible for employment in the public sector, from practicing most professions in the private sector, and made further strides in removing Jews from public life. German education officials expelled Jewish children still attending German schools. German Jews lost their right to hold a driver's license or own an automobile; legislation fixed restrictions on access to public transport. Jews could no longer gain admittance to “German” theaters, movie cinemas, or concert halls.

The events of Kristallnacht represented one of the most important turning points in National Socialist antisemitic policy. Historians have noted that after the pogrom, anti-Jewish policy was concentrated more and more concretely into the hands of the SS. Moreover, the passivity with which most German civilians responded to the violence signaled to the Nazi regime that the German public was prepared for more radical measures. The Nazi regime expanded and radicalized measures aimed at removing Jews entirely from German economic and social life in the forthcoming years, moving eventually towards policies of forced emigration, and finally towards the realization of a Germany “free of Jews” (judenrein) by deportation of the Jewish population “to the East.”

Thus, Kristallnacht figures as an essential turning point in Nazi Germany's persecution of Jews, which culminated in the attempt to annihilate the European Jews.